AP® Calculus AB-BC

The Velocity of Blood Flow

APCALC-MKQ1Z7

The velocity $v$ of the flow of blood at a distance of $r$ from the central axis of an artery of radius $R$ is given as:$$v=k\left( { R }^{ 2 }-{ r }^{ 2 } \right) $$Find the average velocity of the flow of blood along a radius of the artery.